FI96281B - Method and apparatus for precipitating sludge slurry with a disc filter - Google Patents

Method and apparatus for precipitating sludge slurry with a disc filter

Info

Publication number
FI96281B
FI96281B FI933212A FI933212A FI96281B FI 96281 B FI96281 B FI 96281B FI 933212 A FI933212 A FI 933212A FI 933212 A FI933212 A FI 933212A FI 96281 B FI96281 B FI 96281B
Authority
FI
Finland
Prior art keywords
pct
high pressure
disc filter
date
jets
Prior art date
Application number
FI933212A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI933212A0 (en
FI933212A (en
Inventor
Pekka Ruokolainen
Juha Titoff
Original Assignee
Ahlstroem Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ahlstroem Oy filed Critical Ahlstroem Oy
Publication of FI933212A0 publication Critical patent/FI933212A0/en
Priority to FI933212A priority Critical patent/FI96281B/en
Priority to PCT/FI1994/000320 priority patent/WO1995002442A1/en
Priority to AU71264/94A priority patent/AU7126494A/en
Priority to CA002167088A priority patent/CA2167088C/en
Priority to PL94312607A priority patent/PL312607A1/en
Priority to US08/581,581 priority patent/US5900158A/en
Priority to DE69407792T priority patent/DE69407792D1/en
Priority to CN94192784A priority patent/CN1126953A/en
Priority to BR9406989A priority patent/BR9406989A/en
Priority to EP94920487A priority patent/EP0708676B1/en
Priority to AT94920487T priority patent/ATE161746T1/en
Priority to JP50436195A priority patent/JP3698165B2/en
Priority to ZA945137A priority patent/ZA945137B/en
Publication of FI933212A publication Critical patent/FI933212A/en
Priority to NO19960150A priority patent/NO310099B1/en
Application granted granted Critical
Publication of FI96281B publication Critical patent/FI96281B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/02—Precoating the filter medium; Addition of filter aids to the liquid being filtered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/15—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces
    • B01D33/21—Filters with filtering elements which move during the filtering operation with rotary plane filtering surfaces with hollow filtering discs transversely mounted on a hollow rotary shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/463—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/60—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/68—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
    • B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
    • B01D33/725—Special treatment of the feed stream before contacting the filtering element, e.g. cutting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Treatment Of Sludge (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Filtration Of Liquid (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Centrifugal Separators (AREA)

Abstract

PCT No. PCT/FI94/00320 Sec. 371 Date May 20, 1996 Sec. 102(e) Date May 20, 1996 PCT Filed Jul. 12, 1994 PCT Pub. No. WO95/02442 PCT Pub. Date Jan. 26, 1995A method and apparatus thickens lime mud with a disc filter in such a way that the precoat layer on the filter surfaces of the disc filter can be cleaned. Beneath the scrapers for scraping a dry layer of lime sludge from the precoat layers on the disc filter wires surfaces one or more high pressure nozzles, and optionally a low pressure nozzle, are provided for directing jets of liquid at the precoat layer and wire surface. One high pressure nozzle may remove the precoat layer while another cleans the wire surface, and the nozzles may be reciprocated (with respect to the shaft for rotating the disc filters in a trough). The high pressure jets provide liquid at a pressure of about 30-100 bar, while the low pressure jet pressure is between 2-30 bar and may be utilized continuously, or arrested when the high pressure jets are operable.
FI933212A 1993-07-15 1993-07-15 Method and apparatus for precipitating sludge slurry with a disc filter FI96281B (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
FI933212A FI96281B (en) 1993-07-15 1993-07-15 Method and apparatus for precipitating sludge slurry with a disc filter
DE69407792T DE69407792D1 (en) 1993-07-15 1994-07-12 METHOD AND DEVICE FOR THICKENING LIME SLUDGE WITH A DISC FILTER
BR9406989A BR9406989A (en) 1993-07-15 1994-07-12 Procosso for thickening lime mud with a disc filter and apparatus for treating lime or similar sludge
CA002167088A CA2167088C (en) 1993-07-15 1994-07-12 Method and apparatus for thickening lime mud with a disc filter
PL94312607A PL312607A1 (en) 1993-07-15 1994-07-12 Method and device for concentrating defecation mud by means of a disk filter
US08/581,581 US5900158A (en) 1993-07-15 1994-07-12 Method and apparatus for thickening lime mud with a disc filter
PCT/FI1994/000320 WO1995002442A1 (en) 1993-07-15 1994-07-12 Method and apparatus for thickening lime mud with a disc filter
CN94192784A CN1126953A (en) 1993-07-15 1994-07-12 Method and apparatus for thickening lime mud with a disc filter
AU71264/94A AU7126494A (en) 1993-07-15 1994-07-12 Method and apparatus for thickening lime mud with a disc filter
EP94920487A EP0708676B1 (en) 1993-07-15 1994-07-12 Method and apparatus for thickening lime mud with a disc filter
AT94920487T ATE161746T1 (en) 1993-07-15 1994-07-12 METHOD AND DEVICE FOR THICKENING LIME SLUDGE USING A DISC FILTER
JP50436195A JP3698165B2 (en) 1993-07-15 1994-07-12 Method and apparatus for concentrating lime mud with a disk filter
ZA945137A ZA945137B (en) 1993-07-15 1994-07-14 Method and apparatus for thickening lime mud with a disc filter
NO19960150A NO310099B1 (en) 1993-07-15 1996-01-12 Method and apparatus for thickening the calcareous sludge with a disc filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI933212A FI96281B (en) 1993-07-15 1993-07-15 Method and apparatus for precipitating sludge slurry with a disc filter

Publications (3)

Publication Number Publication Date
FI933212A0 FI933212A0 (en) 1993-07-15
FI933212A FI933212A (en) 1995-01-16
FI96281B true FI96281B (en) 1996-02-29

Family

ID=8538317

Family Applications (1)

Application Number Title Priority Date Filing Date
FI933212A FI96281B (en) 1993-07-15 1993-07-15 Method and apparatus for precipitating sludge slurry with a disc filter

Country Status (14)

Country Link
US (1) US5900158A (en)
EP (1) EP0708676B1 (en)
JP (1) JP3698165B2 (en)
CN (1) CN1126953A (en)
AT (1) ATE161746T1 (en)
AU (1) AU7126494A (en)
BR (1) BR9406989A (en)
CA (1) CA2167088C (en)
DE (1) DE69407792D1 (en)
FI (1) FI96281B (en)
NO (1) NO310099B1 (en)
PL (1) PL312607A1 (en)
WO (1) WO1995002442A1 (en)
ZA (1) ZA945137B (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2268781A1 (en) * 1996-10-15 1998-04-23 Baker Hughes Incorporated Oscillating shower for disc filter
SE515001C2 (en) * 1998-12-22 2001-05-28 Hydrotech Nils Aake Persson Ab Apparatus for cleaning filter cloth of a filtration device
SE516246C2 (en) * 2001-02-07 2001-12-10 Kvaerner Pulping Tech Pipe system for receiving and transporting mesa from a white liquor filter
US6833077B2 (en) 2001-04-23 2004-12-21 Gl&V Management Hungary Kft. Sequential swinging precoat removal and renewal system, filter so equipped and method
WO2002085492A1 (en) * 2001-04-23 2002-10-31 Baker Hughes Incorporated Rotatable disc filters with shower systems and methods of use
ES2318008T3 (en) * 2001-07-03 2009-05-01 Flsmidth A/S FILTER WITH SEQULANTIC REMOVAL OF THE PRELIMINARY LAYER AND RENEWAL SYSTEM.
SE526706C2 (en) * 2004-04-16 2005-10-25 Kvaerner Pulping Tech Method and apparatus for washing mesa
SE0401358L (en) * 2004-05-26 2005-02-22 Kvaerner Pulping Tech Method and device for cleaning filters
JP4746300B2 (en) * 2004-10-01 2011-08-10 株式会社ニクニ Filtration method and filtration device
FI20041518A (en) * 2004-11-25 2006-05-26 Andritz Oy Method and apparatus for treating mesa
EP1961475B1 (en) 2007-02-21 2020-06-17 Veolia Water Solutions & Technologies Support High pressure cleaning device
US7736526B2 (en) * 2008-10-03 2010-06-15 Thompson Industrial Services, Llc Method of filtering phosphate utilizing a rotary table filter or horizontal table filter
US20100213142A1 (en) * 2008-11-24 2010-08-26 Andritz Inc. Lime mud vacuum filter washing system and method
US8647516B2 (en) * 2010-09-03 2014-02-11 Johnny Leon LOVE Filtration method with self-cleaning filter assembly
CN101983750B (en) * 2010-12-23 2014-08-06 中信重工机械股份有限公司 High-level spray feed arrangement for vertical disc filter
FI124273B (en) * 2012-02-06 2014-05-30 Andritz Oy Method and apparatus for removing a rotary filter pre-coating layer
FI123557B (en) * 2012-02-06 2013-07-15 Andritz Oy Method and apparatus for thinning a disc filter pre-coating layer
CN104511203A (en) * 2013-09-29 2015-04-15 颜可仁 Disc type vacuum filter for processing sludge
CN103899267B (en) * 2014-03-13 2016-05-25 河南铁福来装备制造股份有限公司 A kind of crawler-type gas extraction hole repair machine
DE102014103831A1 (en) * 2014-03-20 2015-09-24 Huber Se Filter device for the filtration of waste water
US10729994B2 (en) * 2015-12-03 2020-08-04 Veolia Water Solutions & Technologies Support Rotary disc filter
SE1730167A1 (en) * 2017-06-27 2018-11-27 Valmet Technologies Oy FILTER DEVICE
EP3717096A4 (en) 2017-11-29 2021-07-21 Maagan Filtration Aca Ltd. Filtration system
DE102018113804A1 (en) * 2018-06-11 2019-12-12 Voith Patent Gmbh disc filter
JP7033248B2 (en) * 2018-11-05 2022-03-10 株式会社石垣 Filter press filter cloth cleaning method
CN109806653A (en) * 2018-12-14 2019-05-28 合肥信达膜科技有限公司 A kind of drying equipment using ceramic membrane recycling miberal powder
US11000791B2 (en) * 2019-03-06 2021-05-11 Veolia Water Solutions & Technologies Support Rotary disc filter having backwash guides
KR102264455B1 (en) * 2020-08-03 2021-06-11 문연우 Fiber Discfilter comprising groove forming means on the surface of filter cloths

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839194A (en) * 1957-01-08 1958-06-17 Olin Mathieson Continuous filtration process and apparatus therefor
US3521751A (en) * 1967-12-15 1970-07-28 Theodorus H Holthuis Filtering method and apparatus
FI78623C (en) * 1987-11-02 1989-09-11 Ahlstroem Oy Method of unloading disk filter and relief device for carrying out the method.
FI84318C (en) * 1990-04-25 1991-11-25 Ahlstroem Oy FOERFARANDE OCH ANORDNING FOER FOERTJOCKNING AV MESASLAM.
SE470227C (en) * 1992-05-15 2001-10-08 Caustec Ab Apparatus for separating solid particles from a liquid mixture
FI96002C (en) * 1993-04-08 1996-04-25 Ahlstroem Oy Method and apparatus for cleaning a filtration drum used to precipitate sludge sludge

Also Published As

Publication number Publication date
ZA945137B (en) 1995-02-23
WO1995002442A1 (en) 1995-01-26
DE69407792D1 (en) 1998-02-12
NO960150D0 (en) 1996-01-12
CA2167088C (en) 2000-11-28
CN1126953A (en) 1996-07-17
EP0708676B1 (en) 1998-01-07
ATE161746T1 (en) 1998-01-15
PL312607A1 (en) 1996-04-29
FI933212A0 (en) 1993-07-15
NO310099B1 (en) 2001-05-21
JP3698165B2 (en) 2005-09-21
BR9406989A (en) 1996-03-12
FI933212A (en) 1995-01-16
AU7126494A (en) 1995-02-13
CA2167088A1 (en) 1995-01-26
US5900158A (en) 1999-05-04
NO960150L (en) 1996-03-14
JPH09500057A (en) 1997-01-07
EP0708676A1 (en) 1996-05-01

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Legal Events

Date Code Title Description
BB Publication of examined application
GB Transfer or assigment of application

Owner name: AHLSTROM MACHINERY OY